<template>
  <view class="login-container">
    <uni-icons type="contact-filled" size="100" color="#afafaf"></uni-icons>
    <button type="primary" class="btn-logn" open-type="getUserInfo" @getuserinfo="getUserInfo">一键登录</button>
    <text class="tips-text">登录后使用更多功能</text>
  </view>
</template>

<script>
  import {
    mapMutations,
    mapState
  } from 'vuex'
  export default {
    name: "my-login",
    data() {
      return {
        token: "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1aWQiOjEyLCJpYXQiOjE1MjU0MDIyMjMsImV4cCI6MTUyNTQ4ODYyM30.g-4GtEQNPwT_Xs0Pq7Lrco_9DfHQQsBiOKZerkO-O-o"
      };
    },
    computed:{
      ...mapState('m_user',['redirectInfo'])
    },
    methods: {
      ...mapMutations('m_user', ['updateUserInfo', 'updateToken','updateRedirectInfo']),
      getUserInfo(e) {
        //获取用户的基本信息 用户授权之后
        if (e.detail.errMsg === 'getUserInfo:fail auth deny') return uni.$showMsg('您取消了登录授权信息')
        this.updateUserInfo(e.detail.userInfo)

        this.getToken(e.detail)
      },
      async getToken(info) {
        //获取code的值
        const [err, res] = await uni.login().catch(err => err)

        if (err || res.errMsg !== 'login:ok') return uni.$showMsg('登录失败')
        //准备参数调用登录接口
        const query = {
          code: res.code,
          encryptedData: info.encryptedData,
          iv: info.iv,
          rawData: info.rawData,
          signature: info.signature
        }

        // 换取 token
        const {
          data: loginResult
        } = await uni.$http.post('/api/public/v1/users/wxlogin', query)
        if (loginResult.meta.status !== 400) return uni.$showMsg('登录失败！')
        //保存token保存到vuex中
        console.log(loginResult);
        this.updateToken(this.token)
        this.navigateBack()
      },
      navigateBack(){
        if(this.redirectInfo && this.redirectInfo.openType==='switchTab'){
          uni.switchTab({
            url:this.redirectInfo.from,
            complete() {
              this.updateRedirectInfo(null)
            }
          })
        }
      }
    }
  }
</script>

<style lang="scss">
  .login-container {
    height: 750rpx;
    background-color: #f8f8f8;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    .btn-logn {
      width: 90%;
      border-radius: 100px;
      margin: 15px 0;
      background-color: #c00000;
    }

    .tips-text {
      font-size: 12px;
      color: gray;
    }
  }
</style>
